Final answer:
Subwoofers, combined with wedges, enhance sound systems by providing extra power for low-frequency sounds, typically to improve the depth of bass in various audio environments.
Step-by-step explanation:
Subs, in this context, likely refer to subwoofers, which are used in sound systems. They are combined with wedges to enhance sound quality and provide extra power needed for low-frequency sounds. These lower frequencies are often associated with bass sounds, and subwoofers are most effective for things like improving the depth and impact of bass in live performances, cinemas, or home theaters.
In physics, this relates to the concept of sound waves and how different equipment can alter the perception and quality of the sound wave frequencies that are audible to us.